What does it mean to be demented?

Thank you!

The graph shows the populations of two species in a particular region over two decades. based on the graph, what can you conclude about the relationship between the two species? a. the two species have a parasitic relationship. b. the two species are mutualistic in nature. c. the two species exhibit commensalism. d. the two species have a prey-predator relationship. e. the two species have a familial relationship.

What is another way name for bd? cf, bd, cf, be

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound